Failed to load DLL

Qt List of articles

Preface

load dll Failure , Use Dependencies.exe see , Feeling is not related to lack dll
In the use of Qt Call others to write dll, Failed to load all the time . Use windeployqt.exe Command packaging always fails

PS E:\osg\work\CARTDLL_demo_20220520\CallCartDll> D:\Qt\Qt5.12.9\5.12.9\msvc2017_64\bin\windeployqt.exe CallCartDll.exe
“CallCartDll.exe” does not exist.

PS E:\osg\work\CARTDLL_demo_20220520\CallCartDll> cd E:\osg\work\CARTDLL_demo_20220520\CallCartDll\debug
PS E:\osg\work\CARTDLL_demo_20220520\CallCartDll\debug> D:\Qt\Qt5.12.9\5.12.9\msvc2017_64\bin\windeployqt.exe CallCartDll.exe
E:\osg\work\CARTDLL_demo_20220520\CallCartDll\debug\CallCartDll.exe 64 bit, debug executable
E:\osg\work\CARTDLL_demo_20220520\CallCartDll\debug\CallCartDll.exe does not seem to be a Qt executable.
PS E:\osg\work\CARTDLL_demo_20220520\CallCartDll\debug>

Two 、 terms of settlement

1. install Anaconda3 edition -2021.05-Windows-x86_64
2. Set up Anaconda3 Environment variables of

#include <QCoreApplication>
#include <iostream>
#include "windows.h"

using namespace std;
#pragma comment(lib,"CartDll.lib")
typedef double (*cartfun)(int *itype,int *katmod,int *ikaerosol,int *ikheight,float *iseah,float *ivis,float *irh,
                       float *wmintemp,float *wmaxtemp,float *avertrans,float *pathradiance, float *totalradiance);

int main(int argc, char *argv[])
{
    
    QCoreApplication a(argc, argv);

    HINSTANCE hlib=LoadLibrary(TEXT("CartDll.dll"));
    if(!hlib)
    {
    
        cout<<"open dll error!"<<endl;
    }
    else
    {
    
        cout<<"open dll sucess!"<<endl;
    }

    cartfun cart1=(cartfun)GetProcAddress(hlib,"cart");
    if(!cart1)
    {
    
       cout<<"load CART FUN add error!"<<endl;
    }
    else
    {
    
        cout<<"load CART FUN add sucess!"<<endl;
    }

    int iType = 3;          // Calculation mode 
    int iKatmod = 22;        // Atmospheric model 
    int iKaerosol = 1;      // Aerosol type 
    int iKheight = 0;       // Aerosol height model 
    float fSeah = 0.0;        // Surface elevation 
    float fVis = 34.0;       // visibility 
    float fRh = 65.0;         // Relative humidity 
    float fWmintemp = 400.0;  // Calculate the initial wave number 
    float fWmaxtemp = 40000.0;   // Calculate the cut-off wave number 

    float fAvertrans;
    float fTotalradiance;
    float pathradiance;
    cart1(&iType,&iKatmod,&iKaerosol,&iKheight,&fSeah,&fVis,&fRh,&fWmintemp,&fWmaxtemp,&fAvertrans,&pathradiance,&fTotalradiance);

    cout<<" fAvertrans = "<<fAvertrans<<endl;

    cout<<" fTotalradiance = "<<fTotalradiance<<endl;

     cout<<" pathradiance = "<<pathradiance<<endl;



     cout << "Hello World!" << endl;

     std::system("pause");

    return a.exec();
}

summary

It was written by others dll It's useful to python Dependent package , So we need to Anaconda3 Configure the path to the environment variable